Infosys Interview Questions, Process, and Tips

Q1. SELF INTRODUCTION AND FINAL YEAR PROJECT BRIEFING
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Q2. OOPS CONCEPTS AND PRINCIPLES
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OOPS concepts and principles are fundamental to object-oriented programming, including inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation involves bundling data and methods that operate on the data into a single unit.

• Polymorphism allows objects to be treated as instances of their parent class.

• Abstraction hides the impl...read more
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Q1. What is normalisation
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Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
• Normalization involves breaking down data into smaller, more manageable tables

• It helps in reducing data redundancy by storing data in a structured manner

• Normalization ensures data integrity by avoiding anomalies like insertion, update, and deletion anomalies
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Q1. 1)Explain project 2)what is constructor 3)what multiple inheritance 4) what is access modifier
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Interview questions for System Engineer position
• Project is a temporary endeavor to create a unique product or service

• Constructor is a special method used to initialize objects

• Multiple inheritance is the ability of a class to inherit properties and behavior from multiple parent classes

• Access modifier is a keyword that determines the visibility and accessibility of a class, method, or variable
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Q2. Tell me about yourself
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Q3. Difference between method overloading and overriding
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Method overloading is having multiple methods with the same name but different parameters, while method overriding is having a method in a subclass with the same name and parameters as a method in its superclass.
• Method overloading is used to provide different ways of calling the same method with different parameters.

• Method overriding is used to provide a specific implementation of a method that is already provided by i...read more
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Q4. What is constructor and explan it?
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A constructor is a special method that is used to initialize objects in a class.
• Constructors have the same name as the class they belong to.

• They are called automatically when an object is created.

• They can take parameters to initialize the object's properties.

• If no constructor is defined, a default constructor is created by the compiler.

• Example: public class Car { public Car(String make, String model) { this.make = make
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Q1. Explain Oop concepts with examples ,what is static variable, conditions operator, arithmetic operator
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OOP concepts include encapsulation, inheritance, polymorphism, and abstraction. Static variables are shared among all instances of a class.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class)

• Inheritance: Allowing a class to inherit properties and behavior from another class

• Polymorphism: Ability for objects to be treated as instances of their parent class

• Abstraction: Hiding the im...read more
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Q2. What is data base and their types why we use db jions conditions
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A database is a collection of organized data that can be easily accessed, managed, and updated. There are different types of databases such as relational, NoSQL, and object-oriented databases.
• Types of databases include relational databases (e.g. MySQL, Oracle), NoSQL databases (e.g. MongoDB, Cassandra), and object-oriented databases (e.g. db4o).

• We use database joins to combine rows from two or more tables based on a re...read more
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Q3. Tell me about your self
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Q4. Do you have any questions
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I am not sure about it

Q1. Tell me about yourself
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Q2. What is your primary skill
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Aptitude test was little tough but prepare and practice well.

Q1. Explain OOP's Concepts.
Ans. 
OOP stands for Object-Oriented Programming, a programming paradigm based on the concept of objects.
• OOP focuses on creating objects that contain both data and methods to manipulate that data.

• Encapsulation is the concept of bundling data and methods that operate on the data within a single unit, called an object.

• Inheritance allows objects to inherit attributes and methods from parent objects.

• Polymorphism allows objects t...read more
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Q2. Some basic SQL questions.
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Q3. Difference between C++ and Java.
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C++ is a statically typed language with manual memory management, while Java is a dynamically typed language with automatic memory management.
• C++ is compiled directly to machine code, while Java is compiled to bytecode and runs on a virtual machine (JVM).

• C++ supports multiple inheritance, while Java supports only single inheritance through interfaces.

• C++ allows for pointer arithmetic, while Java does not have pointers.

• ...read more
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Q4. Basic of any programming language you know.
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Q5. Explain some basic commands of UNIX
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Basic UNIX commands include ls, cd, pwd, mkdir, rm, cp, mv, cat, grep, and chmod.
• ls - list directory contents

• cd - change directory

• pwd - print working directory

• mkdir - make directory

• rm - remove files or directories

• cp - copy files

• mv - move files

• cat - concatenate and display files

• grep - search text

• chmod - change file permissions
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Q6. Tell me about yourself (Introduce yourself)
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